Fix typo: Prometheus Metrics
Fix typo: Prometheus Metrics

Signed-off-by: Takuya Noguchi <b6ff22f4ae6fe3ca1371a0ef8d104f1c4bca551b@gmail.com>

iiet/iiet-git,stoplightio/gitlabhq,iiet/iiet-git,iiet/iiet-git,axilleas/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq